Two-Dimensional Higher-Derivative Supergravity and a New Mechanism for Supersymmetry Breaking

TL;DR

This paper explores a two-dimensional higher-derivative supergravity model, revealing stable vacua with zero cosmological constant that spontaneously break supersymmetry, offering new insights into supersymmetry breaking mechanisms.

Contribution

It introduces a novel formulation of quadratic (1,1) supergravity in two dimensions and demonstrates a new mechanism for spontaneous supersymmetry breaking.

Findings

Existence of stable vacua with zero cosmological constant

Equivalence to two scalar supermultiplets coupled to supergravity

Spontaneous supersymmetry breaking mechanism

Abstract

We discuss the general form of quadratic (1,1) supergravity in two dimensions, and show that this theory is equivalent to two scalar supermultiplets coupled to non-trivial supergravity. It is demonstrated that the theory possesses stable vacua with vanishing cosmological constant which spontaneously break supersymmetry.